Top 93 Chameleon Top 93 Chameleon

Chameleons change colors to attract mates, regulate body temperature, or tell intruders to stay away.

Top 92 Black Bear Top 92 Black Bear

This white mark, which is constant in Asian black bears, occurs in only 25% of American black bears.

Top 90 Piranha Top 90 Piranha

Adult piranha will eat just about anything - other fish, sick and weakened cattle, even parts of people. Sickly cattle that have stooped their heads down to ...